Electronic device and air blower

ABSTRACT

An electronic device includes a housing, and an air blower arranged in the housing. The air blower includes a base, which receives a fan and defines a number of through slots, and an air duct located on the base. The air duct includes an inner sidewall, an outer sidewall enclosing the inner sidewall, and two connecting plates closing the outer sidewall and the inner sidewall. The outer sidewall, the inner sidewall, and the connecting plates together form a frame-shaped air channel. The outer sidewall defines an inlet communicating with the base. A frame-shaped outlet portion is defined at an outer surface of the inner sidewall. The outlet portion defines an outlet channel communicating with the air channel. The outlet portion defines a frame-shaped outletinner sidewall communicating with the outlet channel.

BACKGROUND

1. Technical Field

The present disclosure relates to electronic devices, and particularly to an electronic device with an air blower.

2. Description of Related Art

Electronic devices, such as computers, are increasingly used in more fields. During operation, the electronic components generate a lot of heat in housings of the electronic devices. A method for dissipating the heat is to use fans. However, the airflow generated by the fans is often too weak to dissipate heat efficiently.

BRIEF DESCRIPTION OF THE DRAWINGS

Many aspects of the present embodiments can be better understood with reference to the following drawing. The components in the drawing are not necessarily drawn to scale, the emphasis instead being placed upon clearly illustrating the principles of the present embodiments. Moreover, in the drawing, like reference numerals designate corresponding parts throughout the several views.

FIG. 1 is an assembled, isometric view of an embodiment of an electronic device, wherein the electronic device includes an air blower.

FIG. 2 is an enlarged view of the air blower of FIG. 1.

FIG. 3 is a cross-sectional view taken along the line III-III of FIG. 2.

FIG. 4 is similar to FIG. 2, but showing the direction of airflow.

DETAILED DESCRIPTION

The disclosure, including the accompanying drawing, is illustrated by way of examples and not by way of limitation. It should be noted that references to “an” or “one” embodiment in this disclosure are not necessarily to the same embodiment, and such references mean “at least one”.

Referring to FIG. 1, an embodiment of an electronic device 10 includes a housing 20, and an air blower 100 arranged in the housing 20. The housing 20 includes a front wall 21, a rear wall 22, a bottom wall 23, a top wall 24, and two sidewalls 25 (one of the sidewalls 25 not shown in the figures). A motherboard 30 is set on one of the sidewalls 25. A power supply unit 40 is arranged on an upper portion of the rear wall 22. A hard disk drive (HDD) bracket 50 for receiving a plurality of HDDs is arranged on a middle of an inner side of the front wall 21. The front wall 21 defines a plurality of first vents 211. The rear wall 22 defines a plurality of second vents 221. The bottom wall 23 defines a plurality of third vents 231 adjacent to the front wall 21.

Referring to FIG. 2 and FIG. 3, the air blower 100 includes a base 101, a fan 102 received in the base 101, and an air duct 103 located on the base 101 and enclosing the HDD bracket 50.

The base 101 is substantially box-shaped, and includes a substantially rectangular bottom plate 1011, and four side plates 1012 extending up from four sides of the bottom plate 1011. The bottom plate 1011 defines a plurality of through slots 1013 aligning with the third vents 231. In this embodiment, the fan 102 is arranged on an inner side of one of the side plates 1012.

The air duct 103 is substantially rectangular frame shaped and includes a substantially rectangular frame shaped outer sidewall 1031, a substantially rectangular frame shaped inner sidewall 1032, and two connecting plates 1033 respectively connected to front sides and rear sides of the outer sidewall 1031 and the inner sidewall 1032 for closing the outer sidewall 1031 and the inner sidewall 1032. The outer sidewall 1031, the inner sidewall 1032, and the connecting plates 1033 cooperatively form a substantially rectangular air channel 1030. The outer sidewall 1031 defines an inlet 1034 in a bottom, and the inlet 1034 communicates with the base 101. A rectangular frame shaped outlet portion 1035 is formed at a front side of an outer surface of the inner sidewall 1032. The outlet portion 1035 defines an outlet channel 1037 communicating with the air channel 1030. The outlet portion 1035 defines a frame-shaped outlet 1036 communicating with the outlet channel 1037. An area of the outlet 1036 is less than an area of the inlet 1034.

When the fan 102 operates, a first part of airflow 60 coming from outside of the housing 20 flows into the base 101 through the third vents 231 and the through slots 1013, flows into the air channel 1030 through the inlet 1034, flows through the outlet channel 1037, and then flows out of the air blower 100 from the outlet 1036, to form four parts of second airflow 80 along four inner surfaces of the inner sidewall 1032. The four parts of second airflow 80 are forced out of the inner sidewall 1032 and vacuumizes in the inner frame 1032 to form a third airflow 90 flowing from front to rear in the inner frame 1032, to cool the HDD bracket 50, the motherboard 30, and the power supply unit 40. The third airflow 90 guides a fourth airflow 70 entering the housing 20 through the first vents 211, to helps cool the HDD bracket 50, the motherboard 30, and the power supply unit 40, and then flows out of the housing 20 from the second vents 221.

In this embodiment, the electronic device 10 utilizes the air blower 100 to increase airflow, which dissipates heat more effectively.

Even though numerous characteristics and advantages of the embodiments have been set forth in the foregoing description, together with details of the structure and function of the embodiments, the disclosure is illustrative only, and changes may be made in detail, especially in the matters of shape, size, and arrangement of parts within the principles of the present disclosure to the full extent indicated by the broad general meaning of the terms in which the appended claims are expressed. 

What is claimed is:
 1. An air blower comprising: a base receiving a fan and defining a plurality of through slots for air entering the base; and an air duct located on the base, wherein the air duct is frame-shaped and comprises an inner sidewall, an outer sidewall enclosing the inner sidewall, and two connecting plates respectively connected to front sides and rear sides of the outer and inner sidewalls for closing the outer sidewall and the inner sidewall, wherein the outer sidewall, the inner sidewall, and the connecting plates together form a frame-shaped air channel, the outer sidewall defines an inlet communicating with the base, a frame-shaped outlet portion is formed on an outer surface of the inner sidewall, the outlet portion defines an outlet channel communicating with the air channel, the outlet portion longitudinally defines a frame-shaped outlet opposite to the outer surface of the inner sidewall and communicating with the outlet channel.
 2. The air blower of claim 1, wherein the inner sidewall and the outer sidewall are both rectangular frames.
 3. The air blower of claim 1, wherein the base is substantially box shaped and comprises a rectangular bottom plate and four side plates extending up from four sides of the bottom plate, the fan is arranged on an inner surface of one of the side plates.
 4. An electronic device comprising: a housing comprising a front wall defining a plurality of first vents, a rear wall defining a plurality of second vents, a bottom wall defining a plurality of third vents adjacent to the front wall; and an air blower arranged in the housing, the air blower comprising: a base set on the bottom wall adjacent to the front wall and receiving a fan and defining a plurality of through slots aligning with the third vents; and an air duct located on the base and aligning with the first vents, wherein the air duct is frame-shaped and comprises an inner sidewall, an outer sidewall enclosing the inner sidewall, and two connecting plates respectively connected to front sides and rear sides of the outer and inner sidewalls for closing the outer sidewall and the inner sidewall, the outer sidewall, the inner sidewall, and the connecting plates together form a frame-shaped air channel, the outer sidewall defines an inlet communicating with the base, a frame-shaped outlet portion is formed at an outer surface of the inner sidewall, the outlet portion defines an outlet channel communicating with the air channel, the outlet portion longitudinally defines a frame-shaped outlet opposite to the outer surface of the inner sidewall and communicating with the outlet channel.
 5. The electronic device of claim 4, wherein the inner sidewall and the outer sidewall are both rectangular frames.
 6. The electronic device of claim 4, wherein the base is substantially box shaped and comprises a rectangular bottom plate and four side plates extending up from four sides of the bottom plate, the fan is arranged on an inner surface of one of the side plates.
 7. The electronic device of claim 4, wherein the housing further comprises a sidewall connected between the front wall and the rear wall, a motherboard is set on the sidewall.
 8. The electronic device of claim 4, wherein a power supply unit is arranged on an upper portion of the rear wall.
 9. The electronic device of claim 4, wherein a hard disk drive bracket is arranged on a middle of the front wall, the inner sidewall encloses the hard disk drive bracket.
 10. The electronic device of claim 4, wherein the air duct aligns with the plurality of second vents. 